Improvement in machines for rolling nut-blanks



3Sheets-Sheetl. J. OSTRAN'DER.

MACHINE FOR ROLLING NUT-BLANKS. No. 171,843. Patented J'an.4,1876.

WI JV SSES I./VVEJVTOR dig a? MPETERS, FHOTO-UTHOGKAFHER. WASHINGTO D C3 Sheets-She.et 2.

J. OSTRANDER.

MACHINE FOR ROLLING NUT-BLANK-S. No.171,843.

Patented Jan.4, 1876.

WIT ES ES N. PEI'ERS, PNOTO-LITNOGRAPHER. WASHINGTQN, D O.

3 Sheets-Sheet 3. J. OSTRANIDER.

MACHINE FUR RQLLIN-G NUT- BLANKS. No.171,843. Patented Jan/1876,

WIT-NE SES I ,IJVVENTOR ,r I mm I ww y day; fi i,

UNITED STATES PATENT OFFICE.

JONATHAN OSTRANDER, OF CLEVELAND, OHIO.

IMPROVEMENT m MACHINES i=oR ROLLING INUT-BLANKS.

Specification forming part of Letters Patent No. 17 L843, dated January4,1876; application filed October 22, 1875.

To all whom it'may concern Be itknown that I, JONATHAN OSTRANDER, ofCleveland, in the county of Ouyahoga and State of Ohio, have inventedcertain new and useful Improvements in Compound Mill for MakingNutBlanks; and I do hereby declare the following to be "a full, clear,and exactdescription of the invention, such as will enable othersskilled in the art to which it pertains to make and use it, referencebeing had to the accompanying drawings, which form a part of thisspecification.

My invention relates to a compound mill for making blanks designed fornuts and for other similar purposes,and may likewise be employed forrolling heavy tubing of any description.

Myinvention consists, first,in aseries of sets of rolls, arranged atanglesto each other, alternately, but so that their grooves shall all bein a line with each other, the said grooves and each pair of rolls beingof therequisite form to make a hexagonal, octagonal, round, square, orother sectional form, of metal, and each succeeding pair of rolls havingits grooves somewhat smaller than the preceding pair, whereby the seriesof rolls are at the same time reducingrolls, and whereby muck-bar, as itcomes from the furnace, or after having passed through certain primaryrolls, may be passed into the first series of rolls, and will emergefrom the last series in a completed form; and in combination therewithof a compound mandrel, extending through the center grooves in the wholeseries of rolls over which the hollow muck-bar is drawn in its passagethrough the rolls, and whereby a hollow product is made to emerge fromthe ends of the rolls, which hollow product, having a sectional form,either square, hexagonal,octagoual, round,or of any other desired form,is suitable especially for nuts, and may be employed for any otherpurpose for which heavy tubing is usually employed.

My invention consists, also, in connection with the mandrel and therolls, of a stop or gate, which may be closed down upon the metal beforeit enters the rolls, to enable the operator to force the mandrel throughthe hollow muck-bar past any blister or other obstructions in the saidopening.

In the drawings, Figure l is a plan view of a machine embodying myinvention. Fig. 2

is an end view of that end where the metal enters the rolls. Fig. 3 is aside elevation of the said machine. Fig. {1 represents several differentforms of muck-bar or piles which may be employed with advantage. Fig. 5is a separate view of the compound mandrel. Fig. 6 is i a separate view,representing the relative position of the mandrel with respect to anyset of rolls.

We will proceed to describe the invention as adapted for the rolling ofa hollow hexagonal nut-blank. A A A A A A arethree sets of rolls,arranged in suitable oblique frames, and housed in the usual manner. B BB B B B are three similar sets of rolls, housed in oblique frames, butstanding at an angle of sixty degrees with the other sets of rolls, andalternating with them, as shownthat is, so that the first set of rolls AA shall incline in one direction. The next set of rolls B B inclines inthe other direction, at an angle of sixty degrees with the first. Thenfollows the rols A A, parallel to the rolls A A, which, in turn, arefollowedby the rolls B B parallel to the rolls B B, and so on,successively. The grooves in each set of rolls present a half-hexagon ineach roll, as shown, and in each succeeding set of rolls the sectionaldimensions of the grooves are made smaller than the preceding ones,soithat the series will form a set of reducing-rolls. These rolls areeach" provided with suitable gearing E, which, by meshing intocorresponding gearing D on the shafts D, are all operated simultaneously in the proper direction by the pow- 'er-shaft E. This methodof gearing is not invariable, but any suitable gearing maybe em ployedthat will drive all of the series of rolls with uniform or proper speedto draw the metal forward from roll to roll, and cause it to emerge fromthe last series of rolls. The speed of each succeeding series of rollsshould be properly governed, so as to receive and dispose of the metalas it comes from the preceding set of rolls, so as not to permitit tobuckle up or bend between the rolls. The diameter ot' the rolls shouldalso be sufficiently great that the metal, as it strikes the rolls,shall pass within such an acute angle as will .be certain to gripe andcarry the metal forward; for if the rolls are of a too small diameterthey will pre-. sentso obtuse anangle at the point where they are struckby the metal as it enters the rolls that the effect will be to stop themetal, instead of drawing it into the rolls.

F is a platform, upon which the hollow muclebar or pile is receivedprevious to rolling, and it is designed that this machine may be adaptedto receive the pile; or the hollow pile may previously have been passedthrough primary rolls before it is passed through this series or trainof rolls,as may be deemed most expedient or practicable, and which will,of

course, vary with circumstances.

- G is a compound mandrel. It is provided with a suitable handle, G, andwith a shaft of varying diameters, G G G 850. It is designed to draw outthe hollow pile over this mandrel, the mandrel having first beeninserted through the hollow pile and through all the grooves of 'thefirst set of rolls A A, so that the end of this portion G of the shaftshall project through the said grooves to a position just beyond theplane of the axes of theltwo rolls AA. The portion G2 of the mandrelshall extend to a similar position with respect to the plane of theaxesof the rolls B B, and so on, as more clearly indicated in the separateView, Fig. 6. The muclrbar is piled in any suitable manner, so as toleave a hollow pile preparatory to heating. There are forms of muck-bar,however, which are especially adapted for this purpose, being previouslyrolled to the proper orm. Such forms are shown in Fig. 4. and may be ofany shape, half hexagon, half octagon, half square or semicircular. Ifat any time the hollow or opening in the pile should become obstructedby a blister, or from any other cause, the pile may be placed on theplatform preparatory to enteringthe rolls, and be held by the lever orgate H firmly while the operator forces the mandrel through the hollowor opening until the mandrel is in its proper position.

I do not know that a series of rolls of this nature has ever before beenmade for rolling a hollow pile over a mandrel, the said mandrel made toextend from one end to the other end of the series. And I do not knowthat a series or train of alternately-inclined reducing rolls has everbefore been made for the purpose of producing blanks for nuts and otherIt is apparent that the mandrel acts at the same time as a guide toguide the metal forward in a direct line from roll to roll; so also itis apparent that it is not absolutely necessarytoextend the mandrelclear through the whole series of rolls; thus it might extend throughall but one series, or. all but two series, the last seriesservingtofinish rather than to materially change the nut-blanks; The blank thusproduced becomes very highly compacted as it passes over the successiveshoulders on themandrel. Thefiber is all in the direction of the length,and is nowhere wrenched or twisted in the process.

After the blank has emerged from the last roll it may be cut up'intosuitable lengths for nuts, or may be cut into suitable lengths for anyother purpose, such as heavy tubing, A nut produced by this means willbe very much stronger, and be capable of sustaining very much greaterstrain, than any other cold or hot pressed nuts produced by any otherprocess of which I am aware.

What I claim is- 1. In combination with rolls A B, 8210.,i'1ll6 compoundmandrel G G, &c., constructed,

when in use, to project its shoulders respect v ively just past theplane "of the axes of the rolls A B A B, &c., substantially as and forthe purpose described.

2. The combination, with the compound re- (lacing-grooves, of theplatform F, and the lever or gate H, whereby the hollow pile will besupported and held in position while any obstruction is removed by themandrel,

substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification in thepresence of 7 two subscribing witnesses.

JONATHAN OSTRANDER.

Witnesses:

FnANoIs TOUMEY, H. T. HOOVER.

